First low-latency LIGO plus Virgo search for binary inspirals and their electromagnetic counterparts
First low-latency LIGO plus Virgo search for binary inspirals and their electromagnetic counterparts
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DOI：
10.1051/0004-6361/201218860
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发表时间：
2012-05-01
影响因子：
6.5
通讯作者：
Zweizig, J.
中科院分区：
文献类型：
--
作者：
Abadie, J.;Abbott, B. P.;Zweizig, J.
目标。对合并中子星双星系统引力波的探测和测量是地基引力波探测器的一个重要科学目标。除了在LIGO和Virgo探测器最敏感波段的频率上发射引力波外，这些源也最有可能产生与引力波发射相对应的电磁辐射。对引力波和电磁信号的联合探测将为天文学提供一个强大的新探测器。在2010年9月19日至10月20日期间，LIGO和Virgo的数据中进行了第一次低延迟的引力波搜索。由此产生的触发器被送到电磁观测站进行跟踪。我们描述了低延迟引力波触发器的产生和处理。电磁图像分析的结果将在其他地方描述。在科学运行的过程中，三个引力波触发器通过了所有的低延迟选择切割。其中一个是由我们的几个观测伙伴跟进的。对引力波数据的分析导致误报率估计为每6.4天一次，远远低于仅基于引力波数据进行探测的要求。
Aims. The detection and measurement of gravitational-waves from coalescing neutron-star binary systems is an important science goal for ground-based gravitational-wave detectors. In addition to emitting gravitational-waves at frequencies that span the most sensitive bands of the LIGO and Virgo detectors, these sources are also amongst the most likely to produce an electromagnetic counterpart to the gravitational-wave emission. A joint detection of the gravitational-wave and electromagnetic signals would provide a powerful new probe for astronomy.Methods. During the period between September 19 and October 20, 2010, the first low-latency search for gravitational-waves from binary inspirals in LIGO and Virgo data was conducted. The resulting triggers were sent to electromagnetic observatories for followup. We describe the generation and processing of the low-latency gravitational-wave triggers. The results of the electromagnetic image analysis will be described elsewhere.Results. Over the course of the science run, three gravitational-wave triggers passed all of the low-latency selection cuts. Of these, one was followed up by several of our observational partners. Analysis of the gravitational-wave data leads to an estimated false alarm rate of once every 6.4 days, falling far short of the requirement for a detection based solely on gravitational-wave data.